Patents by Inventor Tetsuya Shirota

Tetsuya Shirota has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 6891669
    Abstract: According to the present invention, there is provided a microscope system comprising an illuminating portion which illuminates a subject, an image forming lens which projects the subject illuminated by the illuminating portion onto an image pickup element, a light adjustment portion which adjusts a light amount of the illuminating portion, a zoom mechanism which changes a magnification of a subject image projected onto the image pickup element by the image forming lens, and a control portion which changes an excitement pulse width into the illuminating portion in synchronization with a driving pulse of the image pickup element in response to adjustment by the light adjustment portion to control the light amount of illumination light and which varies the excitement pulse width in accordance with the change of the magnification by the zoom mechanism.
    Type: Grant
    Filed: May 25, 2004
    Date of Patent: May 10, 2005
    Assignee: Olympus Corporation
    Inventors: Takashi Yoneyama, Tetsuya Shirota, Masato Kanao, Tomohiro Uchida
  • Patent number: 6876399
    Abstract: An image sensing apparatus for a microscope of this invention includes an image sensing unit for sensing an observation image obtained by a microscope and obtaining the observation image, a microscopy technique determination unit for detecting a microscopy technique in the microscope, a chromaticity determination unit for determining chromaticity of the observation image on the basis of the microscopy technique detected by said microscopy technique determination unit, and determining a region where color balance is adjusted in the observation image, and a color balance adjustment unit for adjusting color balance in accordance with a color balance adjustment amount arbitrarily set for the region of the observation image determined by said chromaticity determination unit.
    Type: Grant
    Filed: January 14, 2000
    Date of Patent: April 5, 2005
    Assignee: Olympus Optical Co., Ltd.
    Inventors: Hideyuki Masuyama, Tetsuya Shirota
  • Publication number: 20040217259
    Abstract: According to the present invention, there is provided a microscope system comprising an illuminating portion which illuminates a subject, an image forming lens which projects the subject illuminated by the illuminating portion onto an image pickup element, a light adjustment portion which adjusts a light amount of the illuminating portion, a zoom mechanism which changes a magnification of a subject image projected onto the image pickup element by the image forming lens, and a control portion which changes an excitement pulse width into the illuminating portion in synchronization with a driving pulse of the image pickup element in response to adjustment by the light adjustment portion to control the light amount of illumination light and which varies the excitement pulse width in accordance with the change of the magnification by the zoom mechanism.
    Type: Application
    Filed: May 25, 2004
    Publication date: November 4, 2004
    Applicant: Olympus Corporation
    Inventors: Takashi Yoneyama, Tetsuya Shirota, Masato Kanao, Tomohiro Uchida
  • Patent number: 6323995
    Abstract: An optical element switching device is provided wherein a plurality of optical elements are held by a guide mechanism for guiding them to move straight or rotate and arranged on a turret, and positioned by a positioning part comprising a spring for pushing a ball into V grooves formed at a rotarys shaft of the turret rotated by a first motor wherein, a selected one of the optical elements is stopped in an optical path (i.e. an optical axis of objectives), and wherein the optical element is moved by a second motor along a direction in which it is guided by the guide mechanism, so that corrections such as adjustment of the contrast and the like are automatically executed at switching operations.
    Type: Grant
    Filed: March 12, 1999
    Date of Patent: November 27, 2001
    Assignee: Olympus Optical Co., Ltd.
    Inventors: Yasuteru Takahama, Mitsuhiko Saito, Sadashi Adachi, Tetsuya Shirota